Paper feeding air door structure of printing machine

Abstract

The invention relates to the technical field of paper feeding air door structures of printing machines, in particular to a paper feeding air door structure of a printing machine, which comprises a front edge adsorption box, an upper plate, a servo motor, a cavity, a rotating rod and a sun gear, the upper end of the front edge adsorption box is fixedly connected with the upper plate, and the side wall of the front edge adsorption box is fixedly connected with the servo motor; a cavity is formed in the upper plate, the output end of the servo motor is fixedly connected with a rotating rod, the surface of the rotating rod is fixedly connected with a sun wheel, a front edge adsorption adjusting structure is arranged at the front end of the front edge adsorption box, a split structure is arranged in the front edge adsorption box, and a disassembly and assembly structure is arranged at the bottom end of the front edge adsorption box. According to the paper feeding air door structure of the printing machine, opening and closing of the air feeding door in front of the front edge adsorption box can be controlled, the size of the air feeding door is adjusted, the adsorption space is changed, the most suitable opening and closing size is achieved, the adsorption strength of the two sides of a paperboard is guaranteed, and the practicability and the adsorption effect of the device are improved.

Description

Technical Field

[0001] The invention relates to the technical field of paper feeding air doors of printing presses, and in particular to a paper feeding air door structure of a printing press. Background Art

[0002] A printing press is a machine for printing text and images. Modern printing presses are generally composed of mechanisms such as plate loading, inking, embossing, and paper feeding (including folding). Its principle is to first make the text or image to be printed into a printing plate, install it on the printing press, and then apply ink to the place where there are text and images on the printing plate by manual or printing machine, and then directly or indirectly transfer it to paper or other substrates (such as textiles, metal plates). The paper feeding damper, as an important part of the automated printing and paper handling system, its main function is to accurately control the conveying speed, direction and tension of the paper, and ensure that the paper enters the subsequent processing links such as printing machines, cutting machines or folding machines smoothly, continuously and accurately during the conveying process. By adjusting the opening angle, wind speed and airflow direction of the damper, the paper feeding damper can effectively overcome the problems of electrostatic adsorption, adhesion and speed inconsistency between papers, and improve production efficiency and product quality.

[0003] The paper feeding damper structure of the existing printing press utilizes the damper to allow air to pass through when vacuum is extracted. Due to different cardboard models, different wind forces are required to adsorb the cardboard during transportation. The paper feeding damper structure of the existing printing press cannot adjust the appropriate damper to allow air to pass through according to the cardboard model, resulting in inappropriate cardboard adsorption capacity during paper feeding. In addition, the structure is an integral one and is not easy to maintain. Therefore, it is urgent to design a paper feeding damper structure for a printing press to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a paper feeding air door structure of a printing press, so as to solve the problem that the paper feeding air door structure of the existing printing press proposed in the above background technology uses the air door to supply air to pass through when the vacuum is extracted. Due to different cardboard models, different wind forces are required to adsorb the cardboard during transportation. The paper feeding air door structure of the existing printing press cannot adjust the appropriate air door according to the cardboard model to supply air to pass through, resulting in the cardboard adsorption capacity not being suitable during the paper feeding process, and the structure is an integral structure and is not easy to repair.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a paper feeding air door structure of a printing press, comprising: a leading edge suction box, an upper plate, a servo motor, a cavity, a rotating rod and a sun gear, wherein the upper end of the leading edge suction box is fixedly connected to the upper plate, the side wall of the leading edge suction box is fixedly connected to the servo motor, a cavity is opened inside the upper plate, the output of the servo motor is fixedly connected to the rotating rod, the surface of the rotating rod is fixedly connected to the sun gear, a leading edge suction adjustment structure is arranged at the front end of the leading edge suction box, a split structure is arranged inside the leading edge suction box, a disassembly structure is arranged at the bottom end of the leading edge suction box, the leading edge suction adjustment structure comprises a leading edge plate, the leading edge plate is installed at the front end of the leading edge suction box, An air supply door is provided at the front end of the leading edge adsorption box, a cavity is provided inside the leading edge adsorption box, a rack plate is provided inside the leading edge plate, the surface of the rack plate is connected to a gear through tooth meshing, the surface of the gear is connected to a turbine through tooth meshing, the turbine is fixedly connected to the surface of the threaded rod, the surface of the threaded rod is connected to a sliding seat through threads, a first connecting rod is fixedly connected to the front end of the sliding seat, a groove for the first connecting rod to slide is provided inside the leading edge adsorption box, a second connecting rod is fixedly connected to the side wall of the first connecting rod, a third connecting rod is fixedly connected to the end of the second connecting rod away from the first connecting rod, a baffle is fixedly connected to the front end of the third connecting rod, and the area of ​​the baffle is larger than the air supply door.

[0006] Preferably, a sliding block is fixedly connected to the rear end of the sliding seat, and the sliding block is slidably arranged inside a sliding groove, and the sliding groove is opened inside the leading edge adsorption box.

[0007] Preferably, the gear side wall is fixedly connected with a support rod, and the support rod is connected to the inner wall of the cavity through a bearing.

[0008] Preferably, a rubber pad is provided on one side of the baffle plate close to the inner wall of the leading edge adsorption box.

[0009] Preferably, the split structure includes a mounting block, which is fixedly connected to the outer wall of the leading edge plate, and the mounting block is inserted into a mounting groove, and the mounting groove is opened inside the leading edge adsorption box. An insertion rod is inserted into the mounting groove, and a pull rod is fixedly connected to the upper end of the insertion rod. The end of the insertion rod away from the mounting groove is inserted into an insertion cavity, and the insertion cavity is opened inside the leading edge adsorption box.

[0010] Preferably, one end of the insertion rod away from the mounting groove is fixedly connected to a spring, and one end of the spring away from the insertion rod is fixedly connected to the inner wall of the insertion cavity.

[0011] Preferably, the side wall of the insertion rod is fixedly connected to a limiting block, the limiting block is slidably arranged inside a limiting groove, and the limiting groove is opened inside the leading edge adsorption box.

[0012] Preferably, a positioning rod is fixedly connected to the bottom end of the leading edge plate, the positioning rod is inserted into a positioning groove, and the positioning groove is provided inside the leading edge adsorption box.

[0013] Preferably, the disassembly and assembly structure comprises a mounting seat, the mounting seat is fixedly connected to the outer wall of the third connecting rod, and the leading edge adsorption box is mounted on the upper end of the baffle.

[0014] Preferably, a mounting bolt is provided inside the baffle, and the mounting bolt is provided inside the mounting seat, and a mounting hole is installed inside the mounting bolt.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. When using the paper feeding air door structure of the printing press, the air outlet opened at the bottom of the front edge adsorption box is used to form negative pressure inside it, and the cardboard is fed on the upper end of the upper plate by the sun gear. At this time, according to the use of different cardboards, the rack plate can be pulled to adjust the lifting and lowering, and the gear is driven to rotate under the action of the meshing of the teeth on its surface. Under the meshing of the teeth on the gear and the turbine surface, the turbine is driven to rotate synchronously, and then the threaded rod is driven to rotate synchronously. Under the action of the thread, the sliding seat is driven to adjust and move synchronously, and then the first connecting rod is driven to move synchronously, and then the second connecting rod is driven to move synchronously, and then the third connecting rod is driven to adjust synchronously, and finally the baffle is driven to adjust horizontally synchronously, so that it can block and adjust the air supply door, and the size of the air inlet of the air supply door can be changed to make it suitable for the adsorption space of the cardboard size, and the corresponding opening The combination can ensure the adsorption strength of the cardboard and make it reach the optimal state, so that the cardboard can be fed through the sun wheel more quickly, and can achieve a certain energy-saving effect. When the gear rotates, the support rods on both sides rotate synchronously, and the support rods are connected to the inner wall of the cavity through bearings. The support rods rotate inside the bearing seat, making the gear rotation more stable. A rubber pad is arranged on the side of the baffle plate close to the inner wall of the leading edge adsorption box, which can increase the friction between the baffle plate and the leading edge adsorption box, and avoid the baffle plate position being offset due to the air inlet, which affects the paper feeding. Through this design, the paper feeding air door structure of the printing press can control the opening and closing of the air supply door in front of the leading edge adsorption box, so that it can adjust the size of the air supply door and change the adsorption space to achieve the most suitable opening and closing size to ensure the adsorption strength on both sides of the cardboard, thereby improving the practicality and adsorption effect of the device.

[0017] 2. When the paper feeding air door structure of the printing press is used, a split structure is adopted between the leading edge plate and the leading edge adsorption box. When the paper feeding air door adopts a split structure, when it is necessary to inspect the inside, the pull rod can be pulled to drive the insertion rod to move away from the mounting block until the insertion rod is moved out of the mounting block. At this time, the limit of the mounting block is released, and the mounting block can be moved out of the mounting slot. The leading edge plate and the leading edge adsorption box are separated at the same time, and the internal air supply structure of the paper feeding air door can be conveniently inspected. When the paper feeding air door structure of the printing press is used, the leading edge plate and the leading edge adsorption box are assembled. When the front edge plate is installed, the front edge plate is installed on the upper end of the front edge suction box. At this time, the mounting block enters the mounting groove synchronously. At this time, the spring is in a compressed and force-accumulated state. The pull rod is released and the elastic force of the spring can automatically drive the plug rod to enter the mounting block for installation and limiting. The assembly is convenient. Through this design, the paper feeding air door structure of the printing press can be changed from an integral structure to a split structure, so that it can be easily disassembled, assembled and repaired during use, which is convenient to use and improves the practicability and convenience of the device.

[0018] 3. When using the paper feeding air door structure of the printing press, when the baffle needs to be replaced, the mounting bolts can be rotated to be simultaneously moved out from the inside of the baffle and the mounting seat, so that the baffle can be conveniently disassembled and installed, and the baffle can be conveniently replaced. Through this design, the paper feeding air door structure of the printing press can conveniently replace the baffle, which is convenient for the baffle to be unable to be closed in time after being worn, thereby improving the practicality and convenience of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 It is a schematic front cross-sectional view of a local three-dimensional structure of the present invention;

[0021] Figure 3 It is a front exploded schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 4 It is a top view schematic diagram of the structure of the present invention;

[0023] Figure 5 It is a top view cross-sectional schematic diagram of a local structure of the present invention;

[0024] Figure 6 It is a front view schematic diagram of the structure of the present invention;

[0025] Figure 7 For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle;

[0026] Figure 8 For the present invention Figure 5 A magnified schematic diagram of the structure at B in the middle;

[0027] Fig. 9 For the present invention Figure 5 Enlarged schematic diagram of the structure at point C in the middle.

[0028] In the figure: 111, leading edge adsorption box; 112, upper plate; 113, servo motor; 114, cavity; 115, rotating rod; 116, sun gear; 2, leading edge adsorption adjustment structure; 211, leading edge plate; 212, air supply door; 213, cavity; 214, rack plate; 215, turbine; 216, threaded rod; 217, sliding seat; 218, first connecting rod; 219, second connecting rod; 220, third connecting rod; 221 , baffle; 222, slider; 223, slide groove; 224, support rod; 225, gear; 3, split structure; 311, mounting block; 312, mounting groove; 313, plug rod; 314, pull rod; 315, insertion cavity; 316, spring; 317, limit block; 318, limit groove; 319, positioning rod; 320, positioning groove; 4, disassembly and assembly structure; 411, mounting seat; 412, mounting hole; 413, mounting bolt. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-9 , an embodiment provided by the present invention:

[0031] A paper feeding damper structure of a printing press comprises: a leading edge suction box 111, an upper plate 112, a servo motor 113, a cavity 114, a rotating rod 115 and a sun gear 116, wherein the upper end of the leading edge suction box 111 is fixedly connected to the upper plate 112, the side wall of the leading edge suction box 111 is fixedly connected to the servo motor 113, the upper plate 112 is provided with a cavity 114 inside, the output of the servo motor 113 is fixedly connected to the rotating rod 115, the surface of the rotating rod 115 is fixedly connected to the sun gear 116, the front end of the leading edge suction box 111 is provided with a leading edge suction adjustment structure 2, the interior of the leading edge suction box 111 is provided with a split structure 3, the bottom end of the leading edge suction box 111 is provided with a disassembly structure 4, and the leading edge suction adjustment structure 2 The front edge plate 211 includes a front edge plate 211, which is installed at the front end of the front edge adsorption box 111. The front end of the front edge adsorption box 111 is provided with an air supply door 212. The front edge adsorption box 111 is provided with a cavity 213. The front edge plate 211 is provided with a rack plate 214. The surface of the rack plate 214 is connected to a gear 225 through tooth meshing. The surface of the gear 225 is connected to a turbine 215 through tooth meshing. The turbine 215 is fixedly connected to the surface of the threaded rod 216. The surface of the threaded rod 216 is connected to a sliding seat 217 through threads. The front end of the sliding seat 217 is fixedly connected to a first connecting rod 218. The front edge adsorption box 111 has a groove for the first connecting rod 218 to slide. The side of the first connecting rod 218 The wall is fixedly connected with a second connecting rod 219, and one end of the second connecting rod 219 away from the first connecting rod 218 is fixedly connected with a third connecting rod 220. The front end of the third connecting rod 220 is fixedly connected with a baffle 221, and the area of ​​the baffle 221 is larger than the air supply door 212. Through this design, when the paper supply air door structure of the printing press is used, the air outlet opened at the bottom end of the leading edge adsorption box 111 is used to form a negative pressure inside, and the paperboard is fed at the upper end of the upper plate 112 by the sun gear 116. At this time, according to the use of different paperboards, the rack plate 214 can be pulled to adjust the lifting and lowering, and the gear 225 is driven to rotate under the action of the meshing of the teeth on its surface. Under the meshing action, the turbine 215 is driven to rotate synchronously, and then the threaded rod 216 is driven to rotate synchronously. Under the action of the thread, the sliding seat 217 is driven to adjust and move synchronously, and then the first connecting rod 218 is driven to move synchronously, and then the second connecting rod 219 is driven to move synchronously, and then the third connecting rod 220 is driven to adjust synchronously, and finally the baffle 221 is driven to adjust horizontally synchronously, so that it can block and adjust the air supply door 212, and the size of the air intake of the air supply door 212 can be changed to make it suitable for the adsorption space of the size of the cardboard. The corresponding opening and closing can ensure the adsorption strength of the cardboard, so that it reaches the optimal state, so that the cardboard can be fed through the sun wheel 116 more quickly, and it can achieve a certain energy-saving effect.

[0032] Furthermore, a slider 222 is fixedly connected to the rear end of the sliding seat 217. The slider 222 is slidably set inside the slide groove 223. The slide groove 223 is opened inside the leading edge adsorption box 111. Through this design, when the sliding seat 217 moves, the slider 222 moves synchronously inside the slide groove 223, thereby realizing the limiting effect on the sliding seat 217 and making its movement more stable.

[0033] Furthermore, the side wall of the gear 225 is fixedly connected with a support rod 224, and the support rod 224 is connected to the inner wall of the cavity 213 through a bearing. Through this design, when the gear 225 rotates, the support rods 224 on both sides thereof rotate synchronously. The support rod 224 is connected to the inner wall of the cavity 213 through a bearing, and the support rod 224 rotates inside the bearing seat, making the rotation of the gear 225 more stable.

[0034] Furthermore, a rubber pad is provided on the side of the baffle 221 close to the inner wall of the leading edge adsorption box 111. Through this design, a rubber pad is provided on the side of the baffle 221 close to the inner wall of the leading edge adsorption box 111, which can increase the friction between the baffle 221 and the leading edge adsorption box 111, thereby preventing the position of the baffle 221 from being offset due to air inlet, thereby affecting paper feeding.

[0035] Furthermore, the split structure 3 includes a mounting block 311, the mounting block 311 is fixedly connected to the outer wall of the front edge plate 211, the mounting block 311 is inserted into the mounting groove 312, the mounting groove 312 is arranged inside the front edge adsorption box 111, a plug rod 313 is inserted inside the mounting groove 312, a pull rod 314 is fixedly connected to the upper end of the plug rod 313, and the end of the plug rod 313 away from the mounting groove 312 is inserted into the insertion cavity 315, and the insertion cavity 315 is arranged inside the front edge adsorption box 111. Through this design, when the paper feeding damper structure of the printing press is used A split structure 3 is adopted between the leading edge plate 211 and the leading edge suction box 111, so that the paper feeding air door adopts the split structure 3. When it is necessary to inspect the inside of it, the pull rod 314 can be pulled to drive the insertion rod 313 to move away from the mounting block 311 until the insertion rod 313 moves out of the mounting block 311. At this time, the limit of the mounting block 311 is released, and the mounting block 311 can be moved out of the mounting groove 312, and the leading edge plate 211 and the leading edge suction box 111 are separated at the same time, so that the internal air supply structure of the paper feeding air door can be conveniently inspected.

[0036] Furthermore, one end of the rod 313 away from the mounting slot 312 is fixedly connected with a spring 316, and the other end of the spring 316 away from the rod 313 is fixedly connected to the inner wall of the insertion cavity 315. Through this design, when the paper feed air door structure of the printing press is used, when the leading edge plate 211 and the leading edge suction box 111 are assembled, the pull rod 314 is first pulled to drive the rod 313 to move away from the mounting block 311, and then the leading edge plate 211 is installed to the upper end of the leading edge suction box 111. At this time, the mounting block 311 synchronously enters the mounting slot 312. At this time, the spring 316 is in a compressed and force-accumulating state. The pull rod 314 is released, and the elastic force of the spring 316 can automatically drive the rod 313 to enter the mounting block 311 for installation and limiting, so that it can be easily assembled.

[0037] Furthermore, the side wall of the insertion rod 313 is fixedly connected to the limiting block 317, and the limiting block 317 is slidably set inside the limiting groove 318. The limiting groove 318 is opened inside the leading edge adsorption box 111. Through this design, when the insertion rod 313 moves, the limiting block 317 moves synchronously inside the limiting groove 318, thereby realizing the limiting effect on the insertion rod 313 and making its sliding more stable.

[0038] Furthermore, a positioning rod 319 is fixedly connected to the bottom end of the leading edge plate 211, and the positioning rod 319 is inserted into the positioning groove 320. The positioning groove 320 is opened inside the leading edge adsorption box 111. Through this design, when installing the leading edge plate 211, the positioning rod 319 preferentially enters the positioning groove 320 for positioning, so that the leading edge plate 211 is more stable when installed to the upper end of the leading edge adsorption box 111.

[0039] Furthermore, the disassembly and assembly structure 4 includes a mounting seat 411 , which is fixedly connected to the outer wall of the third connecting rod 220 , and the mounting seat 411 is installed on the upper end of the baffle 221 .

[0040] Furthermore, a mounting bolt 413 is provided inside the baffle 221, and the mounting bolt 413 is provided inside the mounting seat 411, and a mounting hole 412 is installed inside the mounting bolt 413. Through this design, when the paper feeding damper structure of the printing press is used, when the baffle 221 needs to be replaced, the mounting bolt 413 can be rotated to be simultaneously moved out from the baffle 221 and the mounting seat 411, so that the baffle 221 can be conveniently disassembled and replaced.

[0041] Working principle:

[0042] When the paper feeding air door structure of the printing press is used, the air outlet opened at the bottom end of the front edge adsorption box 111 is used to form a negative pressure inside it, and the cardboard is fed at the upper end of the upper plate 112 by the sun gear 116. At this time, according to the use of different cardboards, the rack plate 214 can be pulled to adjust the lifting and lowering, and the gear 225 is driven to rotate under the action of the meshing of the teeth on its surface. Under the meshing of the teeth on the surface of the gear 225 and the turbine 215, the turbine 215 is driven to rotate synchronously, and then the threaded rod 216 is driven to rotate synchronously. Under the action of the thread, the sliding seat 217 is driven to adjust and move synchronously, and then the first connecting rod 218 is driven to move synchronously, and then the second connecting rod 219 is driven to move synchronously, and then the third connecting rod 220 is driven to adjust synchronously, and finally the baffle 221 is driven to adjust horizontally synchronously, so that it can block and adjust the air supply door 212, and the air supply door can be changed. The size of the air inlet 212 makes it suitable for the adsorption space of the size of the cardboard. The corresponding opening and closing can ensure the adsorption strength of the cardboard, so that it reaches the optimal state, so that the cardboard can be fed through the sun gear 116 more quickly, and can achieve a certain energy-saving effect. When the gear 225 rotates, the support rods 224 on both sides thereof rotate synchronously, and the support rods 224 are connected to the inner wall of the cavity 213 through bearings. The support rods 224 rotate inside the bearing seat, so that the rotation of the gear 225 is more stable. A rubber pad is provided on the side of the baffle 221 close to the inner wall of the leading edge adsorption box 111, which can increase the friction between the baffle 221 and the leading edge adsorption box 111, and avoid the position of the baffle 221 being offset due to the air inlet, which affects the paper feeding. When the sliding seat 217 moves, the slider 222 moves synchronously inside the slide groove 223 to achieve a limiting effect on the sliding seat 217, so that its movement is more stable.

[0043] When the paper feeding air door structure of the printing press is used, a split structure 3 is adopted between the leading edge plate 211 and the leading edge suction box 111, so that the paper feeding air door adopts the split structure 3. When it is necessary to inspect the inside of the paper feeding air door, the pull rod 314 can be pulled to drive the insertion rod 313 to move away from the mounting block 311 until the insertion rod 313 is moved out of the mounting block 311. At this time, the limit of the mounting block 311 is released, and the mounting block 311 can be moved out of the mounting groove 312, and the leading edge plate 211 and the leading edge suction box 111 are separated at the same time, so that the internal air supply structure of the paper feeding air door can be conveniently inspected. When the paper feeding air door structure of the printing press is used, the leading edge plate 211 is When assembling with the leading edge suction box 111, first pull the pull rod 314 to drive the insertion rod 313 to move away from the mounting block 311, and then install the leading edge plate 211 to the upper end of the leading edge suction box 111. At this time, the mounting block 311 simultaneously enters the mounting groove 312. At this time, the spring 316 is in a compressed and force-accumulating state. Release the pull rod 314, and use the elastic force of the spring 316 to automatically drive the insertion rod 313 to enter the mounting block 311 for installation and limiting, which can be conveniently assembled. When installing the leading edge plate 211, the positioning rod 319 first enters the positioning groove 320 for positioning, so that the leading edge plate 211 is more stable when installed to the upper end of the leading edge suction box 111.

[0044] When the paper feeding damper structure of the printing press is used, when the baffle 221 needs to be replaced, the mounting bolt 413 can be rotated to be synchronously moved out from the baffle 221 and the mounting seat 411, so that the baffle 221 can be conveniently disassembled and replaced. The operation is now complete.

[0045] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A paper feeding damper structure of a printing press, comprising: A leading edge suction box (111), an upper plate (112), a servo motor (113), a cavity (114), a rotating rod (115) and a sun gear (116), wherein the upper end of the leading edge suction box (111) is fixedly connected to the upper plate (112), the side wall of the leading edge suction box (111) is fixedly connected to the servo motor (113), the upper plate (112) is provided with a cavity (114), the output of the servo motor (113) is fixedly connected to the rotating rod (115), and the surface of the rotating rod (115) is fixedly connected to the upper plate (112). The invention is connected to a sun gear (116), characterized in that a leading edge adsorption adjustment structure (2) is arranged at the front end of the leading edge adsorption box (111), a split structure (3) is arranged inside the leading edge adsorption box (111), a disassembly structure (4) is arranged at the bottom end of the leading edge adsorption box (111), the leading edge adsorption adjustment structure (2) comprises a leading edge plate (211), the leading edge plate (211) is installed at the front end of the leading edge adsorption box (111), and an air supply door (212) is provided at the front end of the leading edge adsorption box (111). ), a cavity (213) is provided inside the leading edge adsorption box (111), a rack plate (214) is provided inside the leading edge plate (211), a gear (225) is connected to the surface of the rack plate (214) through tooth meshing, a turbine (215) is connected to the surface of the gear (225) through tooth meshing, the turbine (215) is fixedly connected to the surface of a threaded rod (216), the surface of the threaded rod (216) is connected to a sliding seat (217) through threads, and the sliding seat (217) A first connecting rod (218) is fixedly connected to the front end, a groove for the first connecting rod (218) to slide is provided inside the leading edge adsorption box (111), a second connecting rod (219) is fixedly connected to the side wall of the first connecting rod (218), an end of the second connecting rod (219) away from the first connecting rod (218) is fixedly connected to a third connecting rod (220), a baffle (221) is fixedly connected to the front end of the third connecting rod (220), and the area of ​​the baffle (221) is larger than that of the air supply door (212).

2. The paper feeding damper structure of a printing press according to claim 1, characterized in that: The rear end of the sliding seat (217) is fixedly connected with a sliding block (222), and the sliding block (222) is slidably arranged inside a sliding groove (223), and the sliding groove (223) is opened inside the leading edge adsorption box (111).

3. The paper feeding damper structure of a printing press according to claim 1, characterized in that: A support rod (224) is fixedly connected to the side wall of the gear (225), and the support rod (224) is connected to the inner wall of the cavity (213) via a bearing.

4. The paper feeding damper structure of a printing press according to claim 1, characterized in that: A rubber pad is provided on one side of the baffle (221) close to the inner wall of the leading edge adsorption box (111).

5. The paper feeding damper structure of a printing press according to claim 1, characterized in that: The split structure (3) includes a mounting block (311), wherein the mounting block (311) is fixedly connected to the outer wall of the leading edge plate (211), the mounting block (311) is inserted into a mounting groove (312), the mounting groove (312) is arranged inside the leading edge adsorption box (111), an insertion rod (313) is inserted into the mounting groove (312), a pull rod (314) is fixedly connected to the upper end of the insertion rod (313), and one end of the insertion rod (313) away from the mounting groove (312) is inserted into an insertion cavity (315), and the insertion cavity (315) is arranged inside the leading edge adsorption box (111).

6. The paper feeding damper structure of a printing press according to claim 5, characterized in that: One end of the insertion rod (313) away from the installation groove (312) is fixedly connected to a spring (316), and one end of the spring (316) away from the insertion rod (313) is fixedly connected to the inner wall of the insertion cavity (315).

7. The paper feeding damper structure of a printing press according to claim 5, characterized in that: The side wall of the insertion rod (313) is fixedly connected to a limiting block (317), and the limiting block (317) is slidably arranged inside a limiting groove (318), and the limiting groove (318) is opened inside the leading edge adsorption box (111).

8. The paper feeding damper structure of a printing press according to claim 1, characterized in that: A positioning rod (319) is fixedly connected to the bottom end of the leading edge plate (211), and the positioning rod (319) is inserted into a positioning groove (320). The positioning groove (320) is provided inside the leading edge adsorption box (111).

9. The paper feeding damper structure of a printing press according to claim 1, characterized in that: The disassembly and assembly structure (4) comprises a mounting seat (411), wherein the mounting seat (411) is fixedly connected to the outer wall of the third connecting rod (220), and the mounting seat (411) is installed on the upper end of the baffle (221).

10. The paper feeding damper structure of a printing press according to claim 9, characterized in that: A mounting bolt (413) is provided inside the baffle (221), and the mounting bolt (413) is provided inside the mounting seat (411), and a mounting hole (412) is installed inside the mounting bolt (413).

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